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Structure of Atom — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryStructure of Atom1 Mark
MCQ
Which of the following statements about the electron is incorrect?
  • A
    It is a negatively charged particle.
  • B
    The mass of electron is equal to the mass of neutron.
  • C
    It is a basic constituent of all atoms.
  • D
    It is a constituent of cathode rays.
✓

Answer

  1. The mass of electron is equal to the mass of neutron.

Explanation:

The mass of electron is very small as compared to the mass of the neutron. Mass of electron = 9.1 × 10-31kg Mass of neutron = 1.674 × 10-27kg.

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